Answer:
Their goal was to get rid of people who were not like them.
Step-by-step explanation:
White Supremacy was a group of like-minded people who did not like other ethnicities, religions, and other policies that were not their own. They believed the "Nordic Peoples" were the highest rank of race there was/is.
White Supremacy can also refer to a social and a socioeconomic system. That is where the white people enjoy a structural privlege over ethnic groups.
Hope I answered you question. Have a great day/night!